Java Substring
Java String Introduction
Javarevisited: How to get first and last character of String in Java - Example
java for complete beginners - indexof
java.util.scanner - Exception in thread "main" java.lang.StringIndexOutOfBoundsException: String index out of range: 0 at java.lang.String.charAt(String.java:658) - Stack Overflow
Manipulating Characters in a String (The Java™ Tutorials > Learning the Java Language > Numbers and Strings)
Java string.indexOf() to get position of a matching string or char inside the input string
How To Index and Slice Strings in Python? - GeeksforGeeks
Java charAt method
Java charAt method of String with 3 Examples
Java String charAt() Method example
Java String indexOf() Method Examples
Java indexOf Method - w3resource
String index out of range in Java - Stack Overflow
Insert a String into another String in Java - GeeksforGeeks
Java67: How to check String contains a text in Java? contains() and indexOf() Example
Java String charAt() Method example
How to find index of a character or string in java? - YouTube
Index of /java/images/strings/
Java67: How to check String contains a text in Java? contains() and indexOf() Example
Java String lastIndexOf() Method with example
Java String indexOf() Method Examples
String Part 5: indexOf (Java) - YouTube
String index out of range in Java - Stack Overflow
Java: Get the character at the given index within the String
